Climate averages 1991–2020
Weather in Puerto Rico in May
In May, average daytime highs across the 7 cities listed in Puerto Rico range from 29.0°C in Ponce to 30.4°C in Arecibo. Monthly rainfall ranges from 70 mm in Mayagüez to 165 mm in Arecibo.
Long-term climate patterns, not a forecast for a particular trip.
City by city
May in Puerto Rico
| City | Average highHigh / low | Average low | Rainfall mm | Rain days |
|---|---|---|---|---|
| San Juan | 30.4°C23.4°C | 23.4°C | 112 | 16.1 |
| Bayamón | 30.4°C23.5°C | 23.5°C | 106 | 15.6 |
| Carolina | 30.0°C23.6°C | 23.6°C | 112 | 16.1 |
| Ponce | 29.0°C23.5°C | 23.5°C | 86 | 15.6 |
| Arecibo | 30.4°C23.3°C | 23.3°C | 165 | 18.3 |
| Caguas | 29.3°C23.5°C | 23.5°C | 141 | 21.9 |
| Mayagüez | 29.8°C24.5°C | 24.5°C | 70 | 14.7 |
A rain day is a local calendar day with at least 1 mm of precipitation.